1121122120005 has 24 divisors (see below), whose sum is σ = 1946693637720. Its totient is φ = 596880936960.

The previous prime is 1121122119959. The next prime is 1121122120067. The reversal of 1121122120005 is 5000212211211.

It can be written as a sum of positive squares in 4 ways, for example, as 3317068836 + 1117805051169 = 57594^2 + 1057263^2 .

It is not a de Polignac number, because 1121122120005 - 2⁶ = 1121122119941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121122120005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21867036 + ... + 21918245.

It is an arithmetic number, because the mean of its divisors is an integer number (81112234905).

Almost surely, 2^{1121122120005} is an apocalyptic number.

1121122120005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121122120005 is a deficient number, since it is larger than the sum of its proper divisors (825571517715).

1121122120005 is a wasteful number, since it uses less digits than its factorization.

1121122120005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43785861 (or 43785858 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 1121122120005 its reverse (5000212211211), we get a palindrome (6121334331216).

The spelling of 1121122120005 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, five".